1 /* Intel(R) Gigabit Ethernet Linux driver
2 * Copyright(c) 2007-2014 Intel Corporation.
4 * This program is free software; you can redistribute it and/or modify it
5 * under the terms and conditions of the GNU General Public License,
6 * version 2, as published by the Free Software Foundation.
8 * This program is distributed in the hope it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
13 * You should have received a copy of the GNU General Public License along with
14 * this program; if not, see <http://www.gnu.org/licenses/>.
16 * The full GNU General Public License is included in this distribution in
17 * the file called "COPYING".
19 * Contact Information:
20 * e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
21 * Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
28 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
30 #include <linux/types.h>
31 #include <linux/if_ether.h>
32 #include <linux/i2c.h>
34 #include "e1000_mac.h"
35 #include "e1000_82575.h"
36 #include "e1000_i210.h"
38 static s32 igb_get_invariants_82575(struct e1000_hw *);
39 static s32 igb_acquire_phy_82575(struct e1000_hw *);
40 static void igb_release_phy_82575(struct e1000_hw *);
41 static s32 igb_acquire_nvm_82575(struct e1000_hw *);
42 static void igb_release_nvm_82575(struct e1000_hw *);
43 static s32 igb_check_for_link_82575(struct e1000_hw *);
44 static s32 igb_get_cfg_done_82575(struct e1000_hw *);
45 static s32 igb_init_hw_82575(struct e1000_hw *);
46 static s32 igb_phy_hw_reset_sgmii_82575(struct e1000_hw *);
47 static s32 igb_read_phy_reg_sgmii_82575(struct e1000_hw *, u32, u16 *);
48 static s32 igb_read_phy_reg_82580(struct e1000_hw *, u32, u16 *);
49 static s32 igb_write_phy_reg_82580(struct e1000_hw *, u32, u16);
50 static s32 igb_reset_hw_82575(struct e1000_hw *);
51 static s32 igb_reset_hw_82580(struct e1000_hw *);
52 static s32 igb_set_d0_lplu_state_82575(struct e1000_hw *, bool);
53 static s32 igb_set_d0_lplu_state_82580(struct e1000_hw *, bool);
54 static s32 igb_set_d3_lplu_state_82580(struct e1000_hw *, bool);
55 static s32 igb_setup_copper_link_82575(struct e1000_hw *);
56 static s32 igb_setup_serdes_link_82575(struct e1000_hw *);
57 static s32 igb_write_phy_reg_sgmii_82575(struct e1000_hw *, u32, u16);
58 static void igb_clear_hw_cntrs_82575(struct e1000_hw *);
59 static s32 igb_acquire_swfw_sync_82575(struct e1000_hw *, u16);
60 static s32 igb_get_pcs_speed_and_duplex_82575(struct e1000_hw *, u16 *,
62 static s32 igb_get_phy_id_82575(struct e1000_hw *);
63 static void igb_release_swfw_sync_82575(struct e1000_hw *, u16);
64 static bool igb_sgmii_active_82575(struct e1000_hw *);
65 static s32 igb_reset_init_script_82575(struct e1000_hw *);
66 static s32 igb_read_mac_addr_82575(struct e1000_hw *);
67 static s32 igb_set_pcie_completion_timeout(struct e1000_hw *hw);
68 static s32 igb_reset_mdicnfg_82580(struct e1000_hw *hw);
69 static s32 igb_validate_nvm_checksum_82580(struct e1000_hw *hw);
70 static s32 igb_update_nvm_checksum_82580(struct e1000_hw *hw);
71 static s32 igb_validate_nvm_checksum_i350(struct e1000_hw *hw);
72 static s32 igb_update_nvm_checksum_i350(struct e1000_hw *hw);
73 static const u16 e1000_82580_rxpbs_table[] = {
74 36, 72, 144, 1, 2, 4, 8, 16, 35, 70, 140 };
77 * igb_sgmii_uses_mdio_82575 - Determine if I2C pins are for external MDIO
78 * @hw: pointer to the HW structure
80 * Called to determine if the I2C pins are being used for I2C or as an
81 * external MDIO interface since the two options are mutually exclusive.
83 static bool igb_sgmii_uses_mdio_82575(struct e1000_hw *hw)
86 bool ext_mdio = false;
88 switch (hw->mac.type) {
91 reg = rd32(E1000_MDIC);
92 ext_mdio = !!(reg & E1000_MDIC_DEST);
99 reg = rd32(E1000_MDICNFG);
100 ext_mdio = !!(reg & E1000_MDICNFG_EXT_MDIO);
109 * igb_check_for_link_media_swap - Check which M88E1112 interface linked
110 * @hw: pointer to the HW structure
112 * Poll the M88E1112 interfaces to see which interface achieved link.
114 static s32 igb_check_for_link_media_swap(struct e1000_hw *hw)
116 struct e1000_phy_info *phy = &hw->phy;
121 /* Check the copper medium. */
122 ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 0);
126 ret_val = phy->ops.read_reg(hw, E1000_M88E1112_STATUS, &data);
130 if (data & E1000_M88E1112_STATUS_LINK)
131 port = E1000_MEDIA_PORT_COPPER;
133 /* Check the other medium. */
134 ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 1);
138 ret_val = phy->ops.read_reg(hw, E1000_M88E1112_STATUS, &data);
142 /* reset page to 0 */
143 ret_val = phy->ops.write_reg(hw, E1000_M88E1112_PAGE_ADDR, 0);
147 if (data & E1000_M88E1112_STATUS_LINK)
148 port = E1000_MEDIA_PORT_OTHER;
150 /* Determine if a swap needs to happen. */
151 if (port && (hw->dev_spec._82575.media_port != port)) {
152 hw->dev_spec._82575.media_port = port;
153 hw->dev_spec._82575.media_changed = true;
155 ret_val = igb_check_for_link_82575(hw);
162 * igb_init_phy_params_82575 - Init PHY func ptrs.
163 * @hw: pointer to the HW structure
165 static s32 igb_init_phy_params_82575(struct e1000_hw *hw)
167 struct e1000_phy_info *phy = &hw->phy;
171 if (hw->phy.media_type != e1000_media_type_copper) {
172 phy->type = e1000_phy_none;
176 phy->autoneg_mask = AUTONEG_ADVERTISE_SPEED_DEFAULT;
177 phy->reset_delay_us = 100;
179 ctrl_ext = rd32(E1000_CTRL_EXT);
181 if (igb_sgmii_active_82575(hw)) {
182 phy->ops.reset = igb_phy_hw_reset_sgmii_82575;
183 ctrl_ext |= E1000_CTRL_I2C_ENA;
185 phy->ops.reset = igb_phy_hw_reset;
186 ctrl_ext &= ~E1000_CTRL_I2C_ENA;
189 wr32(E1000_CTRL_EXT, ctrl_ext);
190 igb_reset_mdicnfg_82580(hw);
192 if (igb_sgmii_active_82575(hw) && !igb_sgmii_uses_mdio_82575(hw)) {
193 phy->ops.read_reg = igb_read_phy_reg_sgmii_82575;
194 phy->ops.write_reg = igb_write_phy_reg_sgmii_82575;
196 switch (hw->mac.type) {
200 phy->ops.read_reg = igb_read_phy_reg_82580;
201 phy->ops.write_reg = igb_write_phy_reg_82580;
205 phy->ops.read_reg = igb_read_phy_reg_gs40g;
206 phy->ops.write_reg = igb_write_phy_reg_gs40g;
209 phy->ops.read_reg = igb_read_phy_reg_igp;
210 phy->ops.write_reg = igb_write_phy_reg_igp;
215 hw->bus.func = (rd32(E1000_STATUS) & E1000_STATUS_FUNC_MASK) >>
216 E1000_STATUS_FUNC_SHIFT;
218 /* Set phy->phy_addr and phy->id. */
219 ret_val = igb_get_phy_id_82575(hw);
223 /* Verify phy id and set remaining function pointers */
225 case M88E1543_E_PHY_ID:
226 case I347AT4_E_PHY_ID:
227 case M88E1112_E_PHY_ID:
228 case M88E1111_I_PHY_ID:
229 phy->type = e1000_phy_m88;
230 phy->ops.check_polarity = igb_check_polarity_m88;
231 phy->ops.get_phy_info = igb_get_phy_info_m88;
232 if (phy->id != M88E1111_I_PHY_ID)
233 phy->ops.get_cable_length =
234 igb_get_cable_length_m88_gen2;
236 phy->ops.get_cable_length = igb_get_cable_length_m88;
237 phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_m88;
238 /* Check if this PHY is confgured for media swap. */
239 if (phy->id == M88E1112_E_PHY_ID) {
242 ret_val = phy->ops.write_reg(hw,
243 E1000_M88E1112_PAGE_ADDR,
248 ret_val = phy->ops.read_reg(hw,
249 E1000_M88E1112_MAC_CTRL_1,
254 data = (data & E1000_M88E1112_MAC_CTRL_1_MODE_MASK) >>
255 E1000_M88E1112_MAC_CTRL_1_MODE_SHIFT;
256 if (data == E1000_M88E1112_AUTO_COPPER_SGMII ||
257 data == E1000_M88E1112_AUTO_COPPER_BASEX)
258 hw->mac.ops.check_for_link =
259 igb_check_for_link_media_swap;
262 case IGP03E1000_E_PHY_ID:
263 phy->type = e1000_phy_igp_3;
264 phy->ops.get_phy_info = igb_get_phy_info_igp;
265 phy->ops.get_cable_length = igb_get_cable_length_igp_2;
266 phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_igp;
267 phy->ops.set_d0_lplu_state = igb_set_d0_lplu_state_82575;
268 phy->ops.set_d3_lplu_state = igb_set_d3_lplu_state;
270 case I82580_I_PHY_ID:
272 phy->type = e1000_phy_82580;
273 phy->ops.force_speed_duplex =
274 igb_phy_force_speed_duplex_82580;
275 phy->ops.get_cable_length = igb_get_cable_length_82580;
276 phy->ops.get_phy_info = igb_get_phy_info_82580;
277 phy->ops.set_d0_lplu_state = igb_set_d0_lplu_state_82580;
278 phy->ops.set_d3_lplu_state = igb_set_d3_lplu_state_82580;
281 phy->type = e1000_phy_i210;
282 phy->ops.check_polarity = igb_check_polarity_m88;
283 phy->ops.get_phy_info = igb_get_phy_info_m88;
284 phy->ops.get_cable_length = igb_get_cable_length_m88_gen2;
285 phy->ops.set_d0_lplu_state = igb_set_d0_lplu_state_82580;
286 phy->ops.set_d3_lplu_state = igb_set_d3_lplu_state_82580;
287 phy->ops.force_speed_duplex = igb_phy_force_speed_duplex_m88;
290 ret_val = -E1000_ERR_PHY;
299 * igb_init_nvm_params_82575 - Init NVM func ptrs.
300 * @hw: pointer to the HW structure
302 static s32 igb_init_nvm_params_82575(struct e1000_hw *hw)
304 struct e1000_nvm_info *nvm = &hw->nvm;
305 u32 eecd = rd32(E1000_EECD);
308 size = (u16)((eecd & E1000_EECD_SIZE_EX_MASK) >>
309 E1000_EECD_SIZE_EX_SHIFT);
311 /* Added to a constant, "size" becomes the left-shift value
312 * for setting word_size.
314 size += NVM_WORD_SIZE_BASE_SHIFT;
316 /* Just in case size is out of range, cap it to the largest
317 * EEPROM size supported
322 nvm->word_size = 1 << size;
323 nvm->opcode_bits = 8;
326 switch (nvm->override) {
327 case e1000_nvm_override_spi_large:
329 nvm->address_bits = 16;
331 case e1000_nvm_override_spi_small:
333 nvm->address_bits = 8;
336 nvm->page_size = eecd & E1000_EECD_ADDR_BITS ? 32 : 8;
337 nvm->address_bits = eecd & E1000_EECD_ADDR_BITS ?
341 if (nvm->word_size == (1 << 15))
342 nvm->page_size = 128;
344 nvm->type = e1000_nvm_eeprom_spi;
346 /* NVM Function Pointers */
347 nvm->ops.acquire = igb_acquire_nvm_82575;
348 nvm->ops.release = igb_release_nvm_82575;
349 nvm->ops.write = igb_write_nvm_spi;
350 nvm->ops.validate = igb_validate_nvm_checksum;
351 nvm->ops.update = igb_update_nvm_checksum;
352 if (nvm->word_size < (1 << 15))
353 nvm->ops.read = igb_read_nvm_eerd;
355 nvm->ops.read = igb_read_nvm_spi;
357 /* override generic family function pointers for specific descendants */
358 switch (hw->mac.type) {
360 nvm->ops.validate = igb_validate_nvm_checksum_82580;
361 nvm->ops.update = igb_update_nvm_checksum_82580;
365 nvm->ops.validate = igb_validate_nvm_checksum_i350;
366 nvm->ops.update = igb_update_nvm_checksum_i350;
376 * igb_init_mac_params_82575 - Init MAC func ptrs.
377 * @hw: pointer to the HW structure
379 static s32 igb_init_mac_params_82575(struct e1000_hw *hw)
381 struct e1000_mac_info *mac = &hw->mac;
382 struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575;
384 /* Set mta register count */
385 mac->mta_reg_count = 128;
386 /* Set rar entry count */
389 mac->rar_entry_count = E1000_RAR_ENTRIES_82576;
392 mac->rar_entry_count = E1000_RAR_ENTRIES_82580;
396 mac->rar_entry_count = E1000_RAR_ENTRIES_I350;
399 mac->rar_entry_count = E1000_RAR_ENTRIES_82575;
403 if (mac->type >= e1000_82580)
404 mac->ops.reset_hw = igb_reset_hw_82580;
406 mac->ops.reset_hw = igb_reset_hw_82575;
408 if (mac->type >= e1000_i210) {
409 mac->ops.acquire_swfw_sync = igb_acquire_swfw_sync_i210;
410 mac->ops.release_swfw_sync = igb_release_swfw_sync_i210;
413 mac->ops.acquire_swfw_sync = igb_acquire_swfw_sync_82575;
414 mac->ops.release_swfw_sync = igb_release_swfw_sync_82575;
417 /* Set if part includes ASF firmware */
418 mac->asf_firmware_present = true;
419 /* Set if manageability features are enabled. */
420 mac->arc_subsystem_valid =
421 (rd32(E1000_FWSM) & E1000_FWSM_MODE_MASK)
423 /* enable EEE on i350 parts and later parts */
424 if (mac->type >= e1000_i350)
425 dev_spec->eee_disable = false;
427 dev_spec->eee_disable = true;
428 /* Allow a single clear of the SW semaphore on I210 and newer */
429 if (mac->type >= e1000_i210)
430 dev_spec->clear_semaphore_once = true;
431 /* physical interface link setup */
432 mac->ops.setup_physical_interface =
433 (hw->phy.media_type == e1000_media_type_copper)
434 ? igb_setup_copper_link_82575
435 : igb_setup_serdes_link_82575;
437 if (mac->type == e1000_82580) {
438 switch (hw->device_id) {
439 /* feature not supported on these id's */
440 case E1000_DEV_ID_DH89XXCC_SGMII:
441 case E1000_DEV_ID_DH89XXCC_SERDES:
442 case E1000_DEV_ID_DH89XXCC_BACKPLANE:
443 case E1000_DEV_ID_DH89XXCC_SFP:
446 hw->dev_spec._82575.mas_capable = true;
454 * igb_set_sfp_media_type_82575 - derives SFP module media type.
455 * @hw: pointer to the HW structure
457 * The media type is chosen based on SFP module.
458 * compatibility flags retrieved from SFP ID EEPROM.
460 static s32 igb_set_sfp_media_type_82575(struct e1000_hw *hw)
462 s32 ret_val = E1000_ERR_CONFIG;
464 struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575;
465 struct e1000_sfp_flags *eth_flags = &dev_spec->eth_flags;
466 u8 tranceiver_type = 0;
469 /* Turn I2C interface ON and power on sfp cage */
470 ctrl_ext = rd32(E1000_CTRL_EXT);
471 ctrl_ext &= ~E1000_CTRL_EXT_SDP3_DATA;
472 wr32(E1000_CTRL_EXT, ctrl_ext | E1000_CTRL_I2C_ENA);
476 /* Read SFP module data */
478 ret_val = igb_read_sfp_data_byte(hw,
479 E1000_I2CCMD_SFP_DATA_ADDR(E1000_SFF_IDENTIFIER_OFFSET),
489 ret_val = igb_read_sfp_data_byte(hw,
490 E1000_I2CCMD_SFP_DATA_ADDR(E1000_SFF_ETH_FLAGS_OFFSET),
495 /* Check if there is some SFP module plugged and powered */
496 if ((tranceiver_type == E1000_SFF_IDENTIFIER_SFP) ||
497 (tranceiver_type == E1000_SFF_IDENTIFIER_SFF)) {
498 dev_spec->module_plugged = true;
499 if (eth_flags->e1000_base_lx || eth_flags->e1000_base_sx) {
500 hw->phy.media_type = e1000_media_type_internal_serdes;
501 } else if (eth_flags->e100_base_fx) {
502 dev_spec->sgmii_active = true;
503 hw->phy.media_type = e1000_media_type_internal_serdes;
504 } else if (eth_flags->e1000_base_t) {
505 dev_spec->sgmii_active = true;
506 hw->phy.media_type = e1000_media_type_copper;
508 hw->phy.media_type = e1000_media_type_unknown;
509 hw_dbg("PHY module has not been recognized\n");
513 hw->phy.media_type = e1000_media_type_unknown;
517 /* Restore I2C interface setting */
518 wr32(E1000_CTRL_EXT, ctrl_ext);
522 static s32 igb_get_invariants_82575(struct e1000_hw *hw)
524 struct e1000_mac_info *mac = &hw->mac;
525 struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575;
530 switch (hw->device_id) {
531 case E1000_DEV_ID_82575EB_COPPER:
532 case E1000_DEV_ID_82575EB_FIBER_SERDES:
533 case E1000_DEV_ID_82575GB_QUAD_COPPER:
534 mac->type = e1000_82575;
536 case E1000_DEV_ID_82576:
537 case E1000_DEV_ID_82576_NS:
538 case E1000_DEV_ID_82576_NS_SERDES:
539 case E1000_DEV_ID_82576_FIBER:
540 case E1000_DEV_ID_82576_SERDES:
541 case E1000_DEV_ID_82576_QUAD_COPPER:
542 case E1000_DEV_ID_82576_QUAD_COPPER_ET2:
543 case E1000_DEV_ID_82576_SERDES_QUAD:
544 mac->type = e1000_82576;
546 case E1000_DEV_ID_82580_COPPER:
547 case E1000_DEV_ID_82580_FIBER:
548 case E1000_DEV_ID_82580_QUAD_FIBER:
549 case E1000_DEV_ID_82580_SERDES:
550 case E1000_DEV_ID_82580_SGMII:
551 case E1000_DEV_ID_82580_COPPER_DUAL:
552 case E1000_DEV_ID_DH89XXCC_SGMII:
553 case E1000_DEV_ID_DH89XXCC_SERDES:
554 case E1000_DEV_ID_DH89XXCC_BACKPLANE:
555 case E1000_DEV_ID_DH89XXCC_SFP:
556 mac->type = e1000_82580;
558 case E1000_DEV_ID_I350_COPPER:
559 case E1000_DEV_ID_I350_FIBER:
560 case E1000_DEV_ID_I350_SERDES:
561 case E1000_DEV_ID_I350_SGMII:
562 mac->type = e1000_i350;
564 case E1000_DEV_ID_I210_COPPER:
565 case E1000_DEV_ID_I210_FIBER:
566 case E1000_DEV_ID_I210_SERDES:
567 case E1000_DEV_ID_I210_SGMII:
568 case E1000_DEV_ID_I210_COPPER_FLASHLESS:
569 case E1000_DEV_ID_I210_SERDES_FLASHLESS:
570 mac->type = e1000_i210;
572 case E1000_DEV_ID_I211_COPPER:
573 mac->type = e1000_i211;
575 case E1000_DEV_ID_I354_BACKPLANE_1GBPS:
576 case E1000_DEV_ID_I354_SGMII:
577 case E1000_DEV_ID_I354_BACKPLANE_2_5GBPS:
578 mac->type = e1000_i354;
581 return -E1000_ERR_MAC_INIT;
586 /* The 82575 uses bits 22:23 for link mode. The mode can be changed
587 * based on the EEPROM. We cannot rely upon device ID. There
588 * is no distinguishable difference between fiber and internal
589 * SerDes mode on the 82575. There can be an external PHY attached
590 * on the SGMII interface. For this, we'll set sgmii_active to true.
592 hw->phy.media_type = e1000_media_type_copper;
593 dev_spec->sgmii_active = false;
594 dev_spec->module_plugged = false;
596 ctrl_ext = rd32(E1000_CTRL_EXT);
598 link_mode = ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK;
600 case E1000_CTRL_EXT_LINK_MODE_1000BASE_KX:
601 hw->phy.media_type = e1000_media_type_internal_serdes;
603 case E1000_CTRL_EXT_LINK_MODE_SGMII:
604 /* Get phy control interface type set (MDIO vs. I2C)*/
605 if (igb_sgmii_uses_mdio_82575(hw)) {
606 hw->phy.media_type = e1000_media_type_copper;
607 dev_spec->sgmii_active = true;
610 /* fall through for I2C based SGMII */
611 case E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES:
612 /* read media type from SFP EEPROM */
613 ret_val = igb_set_sfp_media_type_82575(hw);
614 if ((ret_val != 0) ||
615 (hw->phy.media_type == e1000_media_type_unknown)) {
616 /* If media type was not identified then return media
617 * type defined by the CTRL_EXT settings.
619 hw->phy.media_type = e1000_media_type_internal_serdes;
621 if (link_mode == E1000_CTRL_EXT_LINK_MODE_SGMII) {
622 hw->phy.media_type = e1000_media_type_copper;
623 dev_spec->sgmii_active = true;
629 /* do not change link mode for 100BaseFX */
630 if (dev_spec->eth_flags.e100_base_fx)
633 /* change current link mode setting */
634 ctrl_ext &= ~E1000_CTRL_EXT_LINK_MODE_MASK;
636 if (hw->phy.media_type == e1000_media_type_copper)
637 ctrl_ext |= E1000_CTRL_EXT_LINK_MODE_SGMII;
639 ctrl_ext |= E1000_CTRL_EXT_LINK_MODE_PCIE_SERDES;
641 wr32(E1000_CTRL_EXT, ctrl_ext);
648 /* mac initialization and operations */
649 ret_val = igb_init_mac_params_82575(hw);
653 /* NVM initialization */
654 ret_val = igb_init_nvm_params_82575(hw);
655 switch (hw->mac.type) {
658 ret_val = igb_init_nvm_params_i210(hw);
667 /* if part supports SR-IOV then initialize mailbox parameters */
671 igb_init_mbx_params_pf(hw);
677 /* setup PHY parameters */
678 ret_val = igb_init_phy_params_82575(hw);
685 * igb_acquire_phy_82575 - Acquire rights to access PHY
686 * @hw: pointer to the HW structure
688 * Acquire access rights to the correct PHY. This is a
689 * function pointer entry point called by the api module.
691 static s32 igb_acquire_phy_82575(struct e1000_hw *hw)
693 u16 mask = E1000_SWFW_PHY0_SM;
695 if (hw->bus.func == E1000_FUNC_1)
696 mask = E1000_SWFW_PHY1_SM;
697 else if (hw->bus.func == E1000_FUNC_2)
698 mask = E1000_SWFW_PHY2_SM;
699 else if (hw->bus.func == E1000_FUNC_3)
700 mask = E1000_SWFW_PHY3_SM;
702 return hw->mac.ops.acquire_swfw_sync(hw, mask);
706 * igb_release_phy_82575 - Release rights to access PHY
707 * @hw: pointer to the HW structure
709 * A wrapper to release access rights to the correct PHY. This is a
710 * function pointer entry point called by the api module.
712 static void igb_release_phy_82575(struct e1000_hw *hw)
714 u16 mask = E1000_SWFW_PHY0_SM;
716 if (hw->bus.func == E1000_FUNC_1)
717 mask = E1000_SWFW_PHY1_SM;
718 else if (hw->bus.func == E1000_FUNC_2)
719 mask = E1000_SWFW_PHY2_SM;
720 else if (hw->bus.func == E1000_FUNC_3)
721 mask = E1000_SWFW_PHY3_SM;
723 hw->mac.ops.release_swfw_sync(hw, mask);
727 * igb_read_phy_reg_sgmii_82575 - Read PHY register using sgmii
728 * @hw: pointer to the HW structure
729 * @offset: register offset to be read
730 * @data: pointer to the read data
732 * Reads the PHY register at offset using the serial gigabit media independent
733 * interface and stores the retrieved information in data.
735 static s32 igb_read_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset,
738 s32 ret_val = -E1000_ERR_PARAM;
740 if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) {
741 hw_dbg("PHY Address %u is out of range\n", offset);
745 ret_val = hw->phy.ops.acquire(hw);
749 ret_val = igb_read_phy_reg_i2c(hw, offset, data);
751 hw->phy.ops.release(hw);
758 * igb_write_phy_reg_sgmii_82575 - Write PHY register using sgmii
759 * @hw: pointer to the HW structure
760 * @offset: register offset to write to
761 * @data: data to write at register offset
763 * Writes the data to PHY register at the offset using the serial gigabit
764 * media independent interface.
766 static s32 igb_write_phy_reg_sgmii_82575(struct e1000_hw *hw, u32 offset,
769 s32 ret_val = -E1000_ERR_PARAM;
772 if (offset > E1000_MAX_SGMII_PHY_REG_ADDR) {
773 hw_dbg("PHY Address %d is out of range\n", offset);
777 ret_val = hw->phy.ops.acquire(hw);
781 ret_val = igb_write_phy_reg_i2c(hw, offset, data);
783 hw->phy.ops.release(hw);
790 * igb_get_phy_id_82575 - Retrieve PHY addr and id
791 * @hw: pointer to the HW structure
793 * Retrieves the PHY address and ID for both PHY's which do and do not use
796 static s32 igb_get_phy_id_82575(struct e1000_hw *hw)
798 struct e1000_phy_info *phy = &hw->phy;
804 /* Extra read required for some PHY's on i354 */
805 if (hw->mac.type == e1000_i354)
808 /* For SGMII PHYs, we try the list of possible addresses until
809 * we find one that works. For non-SGMII PHYs
810 * (e.g. integrated copper PHYs), an address of 1 should
811 * work. The result of this function should mean phy->phy_addr
812 * and phy->id are set correctly.
814 if (!(igb_sgmii_active_82575(hw))) {
816 ret_val = igb_get_phy_id(hw);
820 if (igb_sgmii_uses_mdio_82575(hw)) {
821 switch (hw->mac.type) {
824 mdic = rd32(E1000_MDIC);
825 mdic &= E1000_MDIC_PHY_MASK;
826 phy->addr = mdic >> E1000_MDIC_PHY_SHIFT;
833 mdic = rd32(E1000_MDICNFG);
834 mdic &= E1000_MDICNFG_PHY_MASK;
835 phy->addr = mdic >> E1000_MDICNFG_PHY_SHIFT;
838 ret_val = -E1000_ERR_PHY;
842 ret_val = igb_get_phy_id(hw);
846 /* Power on sgmii phy if it is disabled */
847 ctrl_ext = rd32(E1000_CTRL_EXT);
848 wr32(E1000_CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_SDP3_DATA);
852 /* The address field in the I2CCMD register is 3 bits and 0 is invalid.
853 * Therefore, we need to test 1-7
855 for (phy->addr = 1; phy->addr < 8; phy->addr++) {
856 ret_val = igb_read_phy_reg_sgmii_82575(hw, PHY_ID1, &phy_id);
858 hw_dbg("Vendor ID 0x%08X read at address %u\n",
860 /* At the time of this writing, The M88 part is
861 * the only supported SGMII PHY product.
863 if (phy_id == M88_VENDOR)
866 hw_dbg("PHY address %u was unreadable\n", phy->addr);
870 /* A valid PHY type couldn't be found. */
871 if (phy->addr == 8) {
873 ret_val = -E1000_ERR_PHY;
876 ret_val = igb_get_phy_id(hw);
879 /* restore previous sfp cage power state */
880 wr32(E1000_CTRL_EXT, ctrl_ext);
887 * igb_phy_hw_reset_sgmii_82575 - Performs a PHY reset
888 * @hw: pointer to the HW structure
890 * Resets the PHY using the serial gigabit media independent interface.
892 static s32 igb_phy_hw_reset_sgmii_82575(struct e1000_hw *hw)
896 /* This isn't a true "hard" reset, but is the only reset
897 * available to us at this time.
900 hw_dbg("Soft resetting SGMII attached PHY...\n");
902 /* SFP documentation requires the following to configure the SPF module
903 * to work on SGMII. No further documentation is given.
905 ret_val = hw->phy.ops.write_reg(hw, 0x1B, 0x8084);
909 ret_val = igb_phy_sw_reset(hw);
916 * igb_set_d0_lplu_state_82575 - Set Low Power Linkup D0 state
917 * @hw: pointer to the HW structure
918 * @active: true to enable LPLU, false to disable
920 * Sets the LPLU D0 state according to the active flag. When
921 * activating LPLU this function also disables smart speed
922 * and vice versa. LPLU will not be activated unless the
923 * device autonegotiation advertisement meets standards of
924 * either 10 or 10/100 or 10/100/1000 at all duplexes.
925 * This is a function pointer entry point only called by
926 * PHY setup routines.
928 static s32 igb_set_d0_lplu_state_82575(struct e1000_hw *hw, bool active)
930 struct e1000_phy_info *phy = &hw->phy;
934 ret_val = phy->ops.read_reg(hw, IGP02E1000_PHY_POWER_MGMT, &data);
939 data |= IGP02E1000_PM_D0_LPLU;
940 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT,
945 /* When LPLU is enabled, we should disable SmartSpeed */
946 ret_val = phy->ops.read_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
948 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
949 ret_val = phy->ops.write_reg(hw, IGP01E1000_PHY_PORT_CONFIG,
954 data &= ~IGP02E1000_PM_D0_LPLU;
955 ret_val = phy->ops.write_reg(hw, IGP02E1000_PHY_POWER_MGMT,
957 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used
958 * during Dx states where the power conservation is most
959 * important. During driver activity we should enable
960 * SmartSpeed, so performance is maintained.
962 if (phy->smart_speed == e1000_smart_speed_on) {
963 ret_val = phy->ops.read_reg(hw,
964 IGP01E1000_PHY_PORT_CONFIG, &data);
968 data |= IGP01E1000_PSCFR_SMART_SPEED;
969 ret_val = phy->ops.write_reg(hw,
970 IGP01E1000_PHY_PORT_CONFIG, data);
973 } else if (phy->smart_speed == e1000_smart_speed_off) {
974 ret_val = phy->ops.read_reg(hw,
975 IGP01E1000_PHY_PORT_CONFIG, &data);
979 data &= ~IGP01E1000_PSCFR_SMART_SPEED;
980 ret_val = phy->ops.write_reg(hw,
981 IGP01E1000_PHY_PORT_CONFIG, data);
992 * igb_set_d0_lplu_state_82580 - Set Low Power Linkup D0 state
993 * @hw: pointer to the HW structure
994 * @active: true to enable LPLU, false to disable
996 * Sets the LPLU D0 state according to the active flag. When
997 * activating LPLU this function also disables smart speed
998 * and vice versa. LPLU will not be activated unless the
999 * device autonegotiation advertisement meets standards of
1000 * either 10 or 10/100 or 10/100/1000 at all duplexes.
1001 * This is a function pointer entry point only called by
1002 * PHY setup routines.
1004 static s32 igb_set_d0_lplu_state_82580(struct e1000_hw *hw, bool active)
1006 struct e1000_phy_info *phy = &hw->phy;
1009 data = rd32(E1000_82580_PHY_POWER_MGMT);
1012 data |= E1000_82580_PM_D0_LPLU;
1014 /* When LPLU is enabled, we should disable SmartSpeed */
1015 data &= ~E1000_82580_PM_SPD;
1017 data &= ~E1000_82580_PM_D0_LPLU;
1019 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used
1020 * during Dx states where the power conservation is most
1021 * important. During driver activity we should enable
1022 * SmartSpeed, so performance is maintained.
1024 if (phy->smart_speed == e1000_smart_speed_on)
1025 data |= E1000_82580_PM_SPD;
1026 else if (phy->smart_speed == e1000_smart_speed_off)
1027 data &= ~E1000_82580_PM_SPD; }
1029 wr32(E1000_82580_PHY_POWER_MGMT, data);
1034 * igb_set_d3_lplu_state_82580 - Sets low power link up state for D3
1035 * @hw: pointer to the HW structure
1036 * @active: boolean used to enable/disable lplu
1038 * Success returns 0, Failure returns 1
1040 * The low power link up (lplu) state is set to the power management level D3
1041 * and SmartSpeed is disabled when active is true, else clear lplu for D3
1042 * and enable Smartspeed. LPLU and Smartspeed are mutually exclusive. LPLU
1043 * is used during Dx states where the power conservation is most important.
1044 * During driver activity, SmartSpeed should be enabled so performance is
1047 static s32 igb_set_d3_lplu_state_82580(struct e1000_hw *hw, bool active)
1049 struct e1000_phy_info *phy = &hw->phy;
1052 data = rd32(E1000_82580_PHY_POWER_MGMT);
1055 data &= ~E1000_82580_PM_D3_LPLU;
1056 /* LPLU and SmartSpeed are mutually exclusive. LPLU is used
1057 * during Dx states where the power conservation is most
1058 * important. During driver activity we should enable
1059 * SmartSpeed, so performance is maintained.
1061 if (phy->smart_speed == e1000_smart_speed_on)
1062 data |= E1000_82580_PM_SPD;
1063 else if (phy->smart_speed == e1000_smart_speed_off)
1064 data &= ~E1000_82580_PM_SPD;
1065 } else if ((phy->autoneg_advertised == E1000_ALL_SPEED_DUPLEX) ||
1066 (phy->autoneg_advertised == E1000_ALL_NOT_GIG) ||
1067 (phy->autoneg_advertised == E1000_ALL_10_SPEED)) {
1068 data |= E1000_82580_PM_D3_LPLU;
1069 /* When LPLU is enabled, we should disable SmartSpeed */
1070 data &= ~E1000_82580_PM_SPD;
1073 wr32(E1000_82580_PHY_POWER_MGMT, data);
1078 * igb_acquire_nvm_82575 - Request for access to EEPROM
1079 * @hw: pointer to the HW structure
1081 * Acquire the necessary semaphores for exclusive access to the EEPROM.
1082 * Set the EEPROM access request bit and wait for EEPROM access grant bit.
1083 * Return successful if access grant bit set, else clear the request for
1084 * EEPROM access and return -E1000_ERR_NVM (-1).
1086 static s32 igb_acquire_nvm_82575(struct e1000_hw *hw)
1090 ret_val = hw->mac.ops.acquire_swfw_sync(hw, E1000_SWFW_EEP_SM);
1094 ret_val = igb_acquire_nvm(hw);
1097 hw->mac.ops.release_swfw_sync(hw, E1000_SWFW_EEP_SM);
1104 * igb_release_nvm_82575 - Release exclusive access to EEPROM
1105 * @hw: pointer to the HW structure
1107 * Stop any current commands to the EEPROM and clear the EEPROM request bit,
1108 * then release the semaphores acquired.
1110 static void igb_release_nvm_82575(struct e1000_hw *hw)
1112 igb_release_nvm(hw);
1113 hw->mac.ops.release_swfw_sync(hw, E1000_SWFW_EEP_SM);
1117 * igb_acquire_swfw_sync_82575 - Acquire SW/FW semaphore
1118 * @hw: pointer to the HW structure
1119 * @mask: specifies which semaphore to acquire
1121 * Acquire the SW/FW semaphore to access the PHY or NVM. The mask
1122 * will also specify which port we're acquiring the lock for.
1124 static s32 igb_acquire_swfw_sync_82575(struct e1000_hw *hw, u16 mask)
1128 u32 fwmask = mask << 16;
1130 s32 i = 0, timeout = 200; /* FIXME: find real value to use here */
1132 while (i < timeout) {
1133 if (igb_get_hw_semaphore(hw)) {
1134 ret_val = -E1000_ERR_SWFW_SYNC;
1138 swfw_sync = rd32(E1000_SW_FW_SYNC);
1139 if (!(swfw_sync & (fwmask | swmask)))
1142 /* Firmware currently using resource (fwmask)
1143 * or other software thread using resource (swmask)
1145 igb_put_hw_semaphore(hw);
1151 hw_dbg("Driver can't access resource, SW_FW_SYNC timeout.\n");
1152 ret_val = -E1000_ERR_SWFW_SYNC;
1156 swfw_sync |= swmask;
1157 wr32(E1000_SW_FW_SYNC, swfw_sync);
1159 igb_put_hw_semaphore(hw);
1166 * igb_release_swfw_sync_82575 - Release SW/FW semaphore
1167 * @hw: pointer to the HW structure
1168 * @mask: specifies which semaphore to acquire
1170 * Release the SW/FW semaphore used to access the PHY or NVM. The mask
1171 * will also specify which port we're releasing the lock for.
1173 static void igb_release_swfw_sync_82575(struct e1000_hw *hw, u16 mask)
1177 while (igb_get_hw_semaphore(hw) != 0)
1180 swfw_sync = rd32(E1000_SW_FW_SYNC);
1182 wr32(E1000_SW_FW_SYNC, swfw_sync);
1184 igb_put_hw_semaphore(hw);
1188 * igb_get_cfg_done_82575 - Read config done bit
1189 * @hw: pointer to the HW structure
1191 * Read the management control register for the config done bit for
1192 * completion status. NOTE: silicon which is EEPROM-less will fail trying
1193 * to read the config done bit, so an error is *ONLY* logged and returns
1194 * 0. If we were to return with error, EEPROM-less silicon
1195 * would not be able to be reset or change link.
1197 static s32 igb_get_cfg_done_82575(struct e1000_hw *hw)
1199 s32 timeout = PHY_CFG_TIMEOUT;
1200 u32 mask = E1000_NVM_CFG_DONE_PORT_0;
1202 if (hw->bus.func == 1)
1203 mask = E1000_NVM_CFG_DONE_PORT_1;
1204 else if (hw->bus.func == E1000_FUNC_2)
1205 mask = E1000_NVM_CFG_DONE_PORT_2;
1206 else if (hw->bus.func == E1000_FUNC_3)
1207 mask = E1000_NVM_CFG_DONE_PORT_3;
1210 if (rd32(E1000_EEMNGCTL) & mask)
1212 usleep_range(1000, 2000);
1216 hw_dbg("MNG configuration cycle has not completed.\n");
1218 /* If EEPROM is not marked present, init the PHY manually */
1219 if (((rd32(E1000_EECD) & E1000_EECD_PRES) == 0) &&
1220 (hw->phy.type == e1000_phy_igp_3))
1221 igb_phy_init_script_igp3(hw);
1227 * igb_get_link_up_info_82575 - Get link speed/duplex info
1228 * @hw: pointer to the HW structure
1229 * @speed: stores the current speed
1230 * @duplex: stores the current duplex
1232 * This is a wrapper function, if using the serial gigabit media independent
1233 * interface, use PCS to retrieve the link speed and duplex information.
1234 * Otherwise, use the generic function to get the link speed and duplex info.
1236 static s32 igb_get_link_up_info_82575(struct e1000_hw *hw, u16 *speed,
1241 if (hw->phy.media_type != e1000_media_type_copper)
1242 ret_val = igb_get_pcs_speed_and_duplex_82575(hw, speed,
1245 ret_val = igb_get_speed_and_duplex_copper(hw, speed,
1252 * igb_check_for_link_82575 - Check for link
1253 * @hw: pointer to the HW structure
1255 * If sgmii is enabled, then use the pcs register to determine link, otherwise
1256 * use the generic interface for determining link.
1258 static s32 igb_check_for_link_82575(struct e1000_hw *hw)
1263 if (hw->phy.media_type != e1000_media_type_copper) {
1264 ret_val = igb_get_pcs_speed_and_duplex_82575(hw, &speed,
1266 /* Use this flag to determine if link needs to be checked or
1267 * not. If we have link clear the flag so that we do not
1268 * continue to check for link.
1270 hw->mac.get_link_status = !hw->mac.serdes_has_link;
1272 /* Configure Flow Control now that Auto-Neg has completed.
1273 * First, we need to restore the desired flow control
1274 * settings because we may have had to re-autoneg with a
1275 * different link partner.
1277 ret_val = igb_config_fc_after_link_up(hw);
1279 hw_dbg("Error configuring flow control\n");
1281 ret_val = igb_check_for_copper_link(hw);
1288 * igb_power_up_serdes_link_82575 - Power up the serdes link after shutdown
1289 * @hw: pointer to the HW structure
1291 void igb_power_up_serdes_link_82575(struct e1000_hw *hw)
1296 if ((hw->phy.media_type != e1000_media_type_internal_serdes) &&
1297 !igb_sgmii_active_82575(hw))
1300 /* Enable PCS to turn on link */
1301 reg = rd32(E1000_PCS_CFG0);
1302 reg |= E1000_PCS_CFG_PCS_EN;
1303 wr32(E1000_PCS_CFG0, reg);
1305 /* Power up the laser */
1306 reg = rd32(E1000_CTRL_EXT);
1307 reg &= ~E1000_CTRL_EXT_SDP3_DATA;
1308 wr32(E1000_CTRL_EXT, reg);
1310 /* flush the write to verify completion */
1312 usleep_range(1000, 2000);
1316 * igb_get_pcs_speed_and_duplex_82575 - Retrieve current speed/duplex
1317 * @hw: pointer to the HW structure
1318 * @speed: stores the current speed
1319 * @duplex: stores the current duplex
1321 * Using the physical coding sub-layer (PCS), retrieve the current speed and
1322 * duplex, then store the values in the pointers provided.
1324 static s32 igb_get_pcs_speed_and_duplex_82575(struct e1000_hw *hw, u16 *speed,
1327 struct e1000_mac_info *mac = &hw->mac;
1330 /* Set up defaults for the return values of this function */
1331 mac->serdes_has_link = false;
1335 /* Read the PCS Status register for link state. For non-copper mode,
1336 * the status register is not accurate. The PCS status register is
1339 pcs = rd32(E1000_PCS_LSTAT);
1341 /* The link up bit determines when link is up on autoneg. The sync ok
1342 * gets set once both sides sync up and agree upon link. Stable link
1343 * can be determined by checking for both link up and link sync ok
1345 if ((pcs & E1000_PCS_LSTS_LINK_OK) && (pcs & E1000_PCS_LSTS_SYNK_OK)) {
1346 mac->serdes_has_link = true;
1348 /* Detect and store PCS speed */
1349 if (pcs & E1000_PCS_LSTS_SPEED_1000)
1350 *speed = SPEED_1000;
1351 else if (pcs & E1000_PCS_LSTS_SPEED_100)
1356 /* Detect and store PCS duplex */
1357 if (pcs & E1000_PCS_LSTS_DUPLEX_FULL)
1358 *duplex = FULL_DUPLEX;
1360 *duplex = HALF_DUPLEX;
1362 /* Check if it is an I354 2.5Gb backplane connection. */
1363 if (mac->type == e1000_i354) {
1364 status = rd32(E1000_STATUS);
1365 if ((status & E1000_STATUS_2P5_SKU) &&
1366 !(status & E1000_STATUS_2P5_SKU_OVER)) {
1367 *speed = SPEED_2500;
1368 *duplex = FULL_DUPLEX;
1369 hw_dbg("2500 Mbs, ");
1370 hw_dbg("Full Duplex\n");
1380 * igb_shutdown_serdes_link_82575 - Remove link during power down
1381 * @hw: pointer to the HW structure
1383 * In the case of fiber serdes, shut down optics and PCS on driver unload
1384 * when management pass thru is not enabled.
1386 void igb_shutdown_serdes_link_82575(struct e1000_hw *hw)
1390 if (hw->phy.media_type != e1000_media_type_internal_serdes &&
1391 igb_sgmii_active_82575(hw))
1394 if (!igb_enable_mng_pass_thru(hw)) {
1395 /* Disable PCS to turn off link */
1396 reg = rd32(E1000_PCS_CFG0);
1397 reg &= ~E1000_PCS_CFG_PCS_EN;
1398 wr32(E1000_PCS_CFG0, reg);
1400 /* shutdown the laser */
1401 reg = rd32(E1000_CTRL_EXT);
1402 reg |= E1000_CTRL_EXT_SDP3_DATA;
1403 wr32(E1000_CTRL_EXT, reg);
1405 /* flush the write to verify completion */
1407 usleep_range(1000, 2000);
1412 * igb_reset_hw_82575 - Reset hardware
1413 * @hw: pointer to the HW structure
1415 * This resets the hardware into a known state. This is a
1416 * function pointer entry point called by the api module.
1418 static s32 igb_reset_hw_82575(struct e1000_hw *hw)
1423 /* Prevent the PCI-E bus from sticking if there is no TLP connection
1424 * on the last TLP read/write transaction when MAC is reset.
1426 ret_val = igb_disable_pcie_master(hw);
1428 hw_dbg("PCI-E Master disable polling has failed.\n");
1430 /* set the completion timeout for interface */
1431 ret_val = igb_set_pcie_completion_timeout(hw);
1433 hw_dbg("PCI-E Set completion timeout has failed.\n");
1435 hw_dbg("Masking off all interrupts\n");
1436 wr32(E1000_IMC, 0xffffffff);
1438 wr32(E1000_RCTL, 0);
1439 wr32(E1000_TCTL, E1000_TCTL_PSP);
1442 usleep_range(10000, 20000);
1444 ctrl = rd32(E1000_CTRL);
1446 hw_dbg("Issuing a global reset to MAC\n");
1447 wr32(E1000_CTRL, ctrl | E1000_CTRL_RST);
1449 ret_val = igb_get_auto_rd_done(hw);
1451 /* When auto config read does not complete, do not
1452 * return with an error. This can happen in situations
1453 * where there is no eeprom and prevents getting link.
1455 hw_dbg("Auto Read Done did not complete\n");
1458 /* If EEPROM is not present, run manual init scripts */
1459 if ((rd32(E1000_EECD) & E1000_EECD_PRES) == 0)
1460 igb_reset_init_script_82575(hw);
1462 /* Clear any pending interrupt events. */
1463 wr32(E1000_IMC, 0xffffffff);
1466 /* Install any alternate MAC address into RAR0 */
1467 ret_val = igb_check_alt_mac_addr(hw);
1473 * igb_init_hw_82575 - Initialize hardware
1474 * @hw: pointer to the HW structure
1476 * This inits the hardware readying it for operation.
1478 static s32 igb_init_hw_82575(struct e1000_hw *hw)
1480 struct e1000_mac_info *mac = &hw->mac;
1482 u16 i, rar_count = mac->rar_entry_count;
1484 if ((hw->mac.type >= e1000_i210) &&
1485 !(igb_get_flash_presence_i210(hw))) {
1486 ret_val = igb_pll_workaround_i210(hw);
1491 /* Initialize identification LED */
1492 ret_val = igb_id_led_init(hw);
1494 hw_dbg("Error initializing identification LED\n");
1495 /* This is not fatal and we should not stop init due to this */
1498 /* Disabling VLAN filtering */
1499 hw_dbg("Initializing the IEEE VLAN\n");
1500 if ((hw->mac.type == e1000_i350) || (hw->mac.type == e1000_i354))
1501 igb_clear_vfta_i350(hw);
1505 /* Setup the receive address */
1506 igb_init_rx_addrs(hw, rar_count);
1508 /* Zero out the Multicast HASH table */
1509 hw_dbg("Zeroing the MTA\n");
1510 for (i = 0; i < mac->mta_reg_count; i++)
1511 array_wr32(E1000_MTA, i, 0);
1513 /* Zero out the Unicast HASH table */
1514 hw_dbg("Zeroing the UTA\n");
1515 for (i = 0; i < mac->uta_reg_count; i++)
1516 array_wr32(E1000_UTA, i, 0);
1518 /* Setup link and flow control */
1519 ret_val = igb_setup_link(hw);
1521 /* Clear all of the statistics registers (clear on read). It is
1522 * important that we do this after we have tried to establish link
1523 * because the symbol error count will increment wildly if there
1526 igb_clear_hw_cntrs_82575(hw);
1531 * igb_setup_copper_link_82575 - Configure copper link settings
1532 * @hw: pointer to the HW structure
1534 * Configures the link for auto-neg or forced speed and duplex. Then we check
1535 * for link, once link is established calls to configure collision distance
1536 * and flow control are called.
1538 static s32 igb_setup_copper_link_82575(struct e1000_hw *hw)
1544 ctrl = rd32(E1000_CTRL);
1545 ctrl |= E1000_CTRL_SLU;
1546 ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX);
1547 wr32(E1000_CTRL, ctrl);
1549 /* Clear Go Link Disconnect bit on supported devices */
1550 switch (hw->mac.type) {
1555 phpm_reg = rd32(E1000_82580_PHY_POWER_MGMT);
1556 phpm_reg &= ~E1000_82580_PM_GO_LINKD;
1557 wr32(E1000_82580_PHY_POWER_MGMT, phpm_reg);
1563 ret_val = igb_setup_serdes_link_82575(hw);
1567 if (igb_sgmii_active_82575(hw) && !hw->phy.reset_disable) {
1568 /* allow time for SFP cage time to power up phy */
1571 ret_val = hw->phy.ops.reset(hw);
1573 hw_dbg("Error resetting the PHY.\n");
1577 switch (hw->phy.type) {
1578 case e1000_phy_i210:
1580 switch (hw->phy.id) {
1581 case I347AT4_E_PHY_ID:
1582 case M88E1112_E_PHY_ID:
1583 case M88E1543_E_PHY_ID:
1585 ret_val = igb_copper_link_setup_m88_gen2(hw);
1588 ret_val = igb_copper_link_setup_m88(hw);
1592 case e1000_phy_igp_3:
1593 ret_val = igb_copper_link_setup_igp(hw);
1595 case e1000_phy_82580:
1596 ret_val = igb_copper_link_setup_82580(hw);
1599 ret_val = -E1000_ERR_PHY;
1606 ret_val = igb_setup_copper_link(hw);
1612 * igb_setup_serdes_link_82575 - Setup link for serdes
1613 * @hw: pointer to the HW structure
1615 * Configure the physical coding sub-layer (PCS) link. The PCS link is
1616 * used on copper connections where the serialized gigabit media independent
1617 * interface (sgmii), or serdes fiber is being used. Configures the link
1618 * for auto-negotiation or forces speed/duplex.
1620 static s32 igb_setup_serdes_link_82575(struct e1000_hw *hw)
1622 u32 ctrl_ext, ctrl_reg, reg, anadv_reg;
1627 if ((hw->phy.media_type != e1000_media_type_internal_serdes) &&
1628 !igb_sgmii_active_82575(hw))
1632 /* On the 82575, SerDes loopback mode persists until it is
1633 * explicitly turned off or a power cycle is performed. A read to
1634 * the register does not indicate its status. Therefore, we ensure
1635 * loopback mode is disabled during initialization.
1637 wr32(E1000_SCTL, E1000_SCTL_DISABLE_SERDES_LOOPBACK);
1639 /* power on the sfp cage if present and turn on I2C */
1640 ctrl_ext = rd32(E1000_CTRL_EXT);
1641 ctrl_ext &= ~E1000_CTRL_EXT_SDP3_DATA;
1642 ctrl_ext |= E1000_CTRL_I2C_ENA;
1643 wr32(E1000_CTRL_EXT, ctrl_ext);
1645 ctrl_reg = rd32(E1000_CTRL);
1646 ctrl_reg |= E1000_CTRL_SLU;
1648 if (hw->mac.type == e1000_82575 || hw->mac.type == e1000_82576) {
1649 /* set both sw defined pins */
1650 ctrl_reg |= E1000_CTRL_SWDPIN0 | E1000_CTRL_SWDPIN1;
1652 /* Set switch control to serdes energy detect */
1653 reg = rd32(E1000_CONNSW);
1654 reg |= E1000_CONNSW_ENRGSRC;
1655 wr32(E1000_CONNSW, reg);
1658 reg = rd32(E1000_PCS_LCTL);
1660 /* default pcs_autoneg to the same setting as mac autoneg */
1661 pcs_autoneg = hw->mac.autoneg;
1663 switch (ctrl_ext & E1000_CTRL_EXT_LINK_MODE_MASK) {
1664 case E1000_CTRL_EXT_LINK_MODE_SGMII:
1665 /* sgmii mode lets the phy handle forcing speed/duplex */
1667 /* autoneg time out should be disabled for SGMII mode */
1668 reg &= ~(E1000_PCS_LCTL_AN_TIMEOUT);
1670 case E1000_CTRL_EXT_LINK_MODE_1000BASE_KX:
1671 /* disable PCS autoneg and support parallel detect only */
1672 pcs_autoneg = false;
1674 if (hw->mac.type == e1000_82575 ||
1675 hw->mac.type == e1000_82576) {
1676 ret_val = hw->nvm.ops.read(hw, NVM_COMPAT, 1, &data);
1678 hw_dbg(KERN_DEBUG "NVM Read Error\n\n");
1682 if (data & E1000_EEPROM_PCS_AUTONEG_DISABLE_BIT)
1683 pcs_autoneg = false;
1686 /* non-SGMII modes only supports a speed of 1000/Full for the
1687 * link so it is best to just force the MAC and let the pcs
1688 * link either autoneg or be forced to 1000/Full
1690 ctrl_reg |= E1000_CTRL_SPD_1000 | E1000_CTRL_FRCSPD |
1691 E1000_CTRL_FD | E1000_CTRL_FRCDPX;
1693 /* set speed of 1000/Full if speed/duplex is forced */
1694 reg |= E1000_PCS_LCTL_FSV_1000 | E1000_PCS_LCTL_FDV_FULL;
1698 wr32(E1000_CTRL, ctrl_reg);
1700 /* New SerDes mode allows for forcing speed or autonegotiating speed
1701 * at 1gb. Autoneg should be default set by most drivers. This is the
1702 * mode that will be compatible with older link partners and switches.
1703 * However, both are supported by the hardware and some drivers/tools.
1705 reg &= ~(E1000_PCS_LCTL_AN_ENABLE | E1000_PCS_LCTL_FLV_LINK_UP |
1706 E1000_PCS_LCTL_FSD | E1000_PCS_LCTL_FORCE_LINK);
1709 /* Set PCS register for autoneg */
1710 reg |= E1000_PCS_LCTL_AN_ENABLE | /* Enable Autoneg */
1711 E1000_PCS_LCTL_AN_RESTART; /* Restart autoneg */
1713 /* Disable force flow control for autoneg */
1714 reg &= ~E1000_PCS_LCTL_FORCE_FCTRL;
1716 /* Configure flow control advertisement for autoneg */
1717 anadv_reg = rd32(E1000_PCS_ANADV);
1718 anadv_reg &= ~(E1000_TXCW_ASM_DIR | E1000_TXCW_PAUSE);
1719 switch (hw->fc.requested_mode) {
1721 case e1000_fc_rx_pause:
1722 anadv_reg |= E1000_TXCW_ASM_DIR;
1723 anadv_reg |= E1000_TXCW_PAUSE;
1725 case e1000_fc_tx_pause:
1726 anadv_reg |= E1000_TXCW_ASM_DIR;
1731 wr32(E1000_PCS_ANADV, anadv_reg);
1733 hw_dbg("Configuring Autoneg:PCS_LCTL=0x%08X\n", reg);
1735 /* Set PCS register for forced link */
1736 reg |= E1000_PCS_LCTL_FSD; /* Force Speed */
1738 /* Force flow control for forced link */
1739 reg |= E1000_PCS_LCTL_FORCE_FCTRL;
1741 hw_dbg("Configuring Forced Link:PCS_LCTL=0x%08X\n", reg);
1744 wr32(E1000_PCS_LCTL, reg);
1746 if (!pcs_autoneg && !igb_sgmii_active_82575(hw))
1747 igb_force_mac_fc(hw);
1753 * igb_sgmii_active_82575 - Return sgmii state
1754 * @hw: pointer to the HW structure
1756 * 82575 silicon has a serialized gigabit media independent interface (sgmii)
1757 * which can be enabled for use in the embedded applications. Simply
1758 * return the current state of the sgmii interface.
1760 static bool igb_sgmii_active_82575(struct e1000_hw *hw)
1762 struct e1000_dev_spec_82575 *dev_spec = &hw->dev_spec._82575;
1763 return dev_spec->sgmii_active;
1767 * igb_reset_init_script_82575 - Inits HW defaults after reset
1768 * @hw: pointer to the HW structure
1770 * Inits recommended HW defaults after a reset when there is no EEPROM
1771 * detected. This is only for the 82575.
1773 static s32 igb_reset_init_script_82575(struct e1000_hw *hw)
1775 if (hw->mac.type == e1000_82575) {
1776 hw_dbg("Running reset init script for 82575\n");
1777 /* SerDes configuration via SERDESCTRL */
1778 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x00, 0x0C);
1779 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x01, 0x78);
1780 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x1B, 0x23);
1781 igb_write_8bit_ctrl_reg(hw, E1000_SCTL, 0x23, 0x15);
1783 /* CCM configuration via CCMCTL register */
1784 igb_write_8bit_ctrl_reg(hw, E1000_CCMCTL, 0x14, 0x00);
1785 igb_write_8bit_ctrl_reg(hw, E1000_CCMCTL, 0x10, 0x00);
1787 /* PCIe lanes configuration */
1788 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x00, 0xEC);
1789 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x61, 0xDF);
1790 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x34, 0x05);
1791 igb_write_8bit_ctrl_reg(hw, E1000_GIOCTL, 0x2F, 0x81);
1793 /* PCIe PLL Configuration */
1794 igb_write_8bit_ctrl_reg(hw, E1000_SCCTL, 0x02, 0x47);
1795 igb_write_8bit_ctrl_reg(hw, E1000_SCCTL, 0x14, 0x00);
1796 igb_write_8bit_ctrl_reg(hw, E1000_SCCTL, 0x10, 0x00);
1803 * igb_read_mac_addr_82575 - Read device MAC address
1804 * @hw: pointer to the HW structure
1806 static s32 igb_read_mac_addr_82575(struct e1000_hw *hw)
1810 /* If there's an alternate MAC address place it in RAR0
1811 * so that it will override the Si installed default perm
1814 ret_val = igb_check_alt_mac_addr(hw);
1818 ret_val = igb_read_mac_addr(hw);
1825 * igb_power_down_phy_copper_82575 - Remove link during PHY power down
1826 * @hw: pointer to the HW structure
1828 * In the case of a PHY power down to save power, or to turn off link during a
1829 * driver unload, or wake on lan is not enabled, remove the link.
1831 void igb_power_down_phy_copper_82575(struct e1000_hw *hw)
1833 /* If the management interface is not enabled, then power down */
1834 if (!(igb_enable_mng_pass_thru(hw) || igb_check_reset_block(hw)))
1835 igb_power_down_phy_copper(hw);
1839 * igb_clear_hw_cntrs_82575 - Clear device specific hardware counters
1840 * @hw: pointer to the HW structure
1842 * Clears the hardware counters by reading the counter registers.
1844 static void igb_clear_hw_cntrs_82575(struct e1000_hw *hw)
1846 igb_clear_hw_cntrs_base(hw);
1852 rd32(E1000_PRC1023);
1853 rd32(E1000_PRC1522);
1858 rd32(E1000_PTC1023);
1859 rd32(E1000_PTC1522);
1861 rd32(E1000_ALGNERRC);
1864 rd32(E1000_CEXTERR);
1875 rd32(E1000_ICRXPTC);
1876 rd32(E1000_ICRXATC);
1877 rd32(E1000_ICTXPTC);
1878 rd32(E1000_ICTXATC);
1879 rd32(E1000_ICTXQEC);
1880 rd32(E1000_ICTXQMTC);
1881 rd32(E1000_ICRXDMTC);
1888 rd32(E1000_HTCBDPC);
1893 rd32(E1000_LENERRS);
1895 /* This register should not be read in copper configurations */
1896 if (hw->phy.media_type == e1000_media_type_internal_serdes ||
1897 igb_sgmii_active_82575(hw))
1902 * igb_rx_fifo_flush_82575 - Clean rx fifo after RX enable
1903 * @hw: pointer to the HW structure
1905 * After rx enable if managability is enabled then there is likely some
1906 * bad data at the start of the fifo and possibly in the DMA fifo. This
1907 * function clears the fifos and flushes any packets that came in as rx was
1910 void igb_rx_fifo_flush_82575(struct e1000_hw *hw)
1912 u32 rctl, rlpml, rxdctl[4], rfctl, temp_rctl, rx_enabled;
1915 if (hw->mac.type != e1000_82575 ||
1916 !(rd32(E1000_MANC) & E1000_MANC_RCV_TCO_EN))
1919 /* Disable all RX queues */
1920 for (i = 0; i < 4; i++) {
1921 rxdctl[i] = rd32(E1000_RXDCTL(i));
1922 wr32(E1000_RXDCTL(i),
1923 rxdctl[i] & ~E1000_RXDCTL_QUEUE_ENABLE);
1925 /* Poll all queues to verify they have shut down */
1926 for (ms_wait = 0; ms_wait < 10; ms_wait++) {
1927 usleep_range(1000, 2000);
1929 for (i = 0; i < 4; i++)
1930 rx_enabled |= rd32(E1000_RXDCTL(i));
1931 if (!(rx_enabled & E1000_RXDCTL_QUEUE_ENABLE))
1936 hw_dbg("Queue disable timed out after 10ms\n");
1938 /* Clear RLPML, RCTL.SBP, RFCTL.LEF, and set RCTL.LPE so that all
1939 * incoming packets are rejected. Set enable and wait 2ms so that
1940 * any packet that was coming in as RCTL.EN was set is flushed
1942 rfctl = rd32(E1000_RFCTL);
1943 wr32(E1000_RFCTL, rfctl & ~E1000_RFCTL_LEF);
1945 rlpml = rd32(E1000_RLPML);
1946 wr32(E1000_RLPML, 0);
1948 rctl = rd32(E1000_RCTL);
1949 temp_rctl = rctl & ~(E1000_RCTL_EN | E1000_RCTL_SBP);
1950 temp_rctl |= E1000_RCTL_LPE;
1952 wr32(E1000_RCTL, temp_rctl);
1953 wr32(E1000_RCTL, temp_rctl | E1000_RCTL_EN);
1955 usleep_range(2000, 3000);
1957 /* Enable RX queues that were previously enabled and restore our
1960 for (i = 0; i < 4; i++)
1961 wr32(E1000_RXDCTL(i), rxdctl[i]);
1962 wr32(E1000_RCTL, rctl);
1965 wr32(E1000_RLPML, rlpml);
1966 wr32(E1000_RFCTL, rfctl);
1968 /* Flush receive errors generated by workaround */
1975 * igb_set_pcie_completion_timeout - set pci-e completion timeout
1976 * @hw: pointer to the HW structure
1978 * The defaults for 82575 and 82576 should be in the range of 50us to 50ms,
1979 * however the hardware default for these parts is 500us to 1ms which is less
1980 * than the 10ms recommended by the pci-e spec. To address this we need to
1981 * increase the value to either 10ms to 200ms for capability version 1 config,
1982 * or 16ms to 55ms for version 2.
1984 static s32 igb_set_pcie_completion_timeout(struct e1000_hw *hw)
1986 u32 gcr = rd32(E1000_GCR);
1990 /* only take action if timeout value is defaulted to 0 */
1991 if (gcr & E1000_GCR_CMPL_TMOUT_MASK)
1994 /* if capabilities version is type 1 we can write the
1995 * timeout of 10ms to 200ms through the GCR register
1997 if (!(gcr & E1000_GCR_CAP_VER2)) {
1998 gcr |= E1000_GCR_CMPL_TMOUT_10ms;
2002 /* for version 2 capabilities we need to write the config space
2003 * directly in order to set the completion timeout value for
2006 ret_val = igb_read_pcie_cap_reg(hw, PCIE_DEVICE_CONTROL2,
2011 pcie_devctl2 |= PCIE_DEVICE_CONTROL2_16ms;
2013 ret_val = igb_write_pcie_cap_reg(hw, PCIE_DEVICE_CONTROL2,
2016 /* disable completion timeout resend */
2017 gcr &= ~E1000_GCR_CMPL_TMOUT_RESEND;
2019 wr32(E1000_GCR, gcr);
2024 * igb_vmdq_set_anti_spoofing_pf - enable or disable anti-spoofing
2025 * @hw: pointer to the hardware struct
2026 * @enable: state to enter, either enabled or disabled
2027 * @pf: Physical Function pool - do not set anti-spoofing for the PF
2029 * enables/disables L2 switch anti-spoofing functionality.
2031 void igb_vmdq_set_anti_spoofing_pf(struct e1000_hw *hw, bool enable, int pf)
2033 u32 reg_val, reg_offset;
2035 switch (hw->mac.type) {
2037 reg_offset = E1000_DTXSWC;
2041 reg_offset = E1000_TXSWC;
2047 reg_val = rd32(reg_offset);
2049 reg_val |= (E1000_DTXSWC_MAC_SPOOF_MASK |
2050 E1000_DTXSWC_VLAN_SPOOF_MASK);
2051 /* The PF can spoof - it has to in order to
2052 * support emulation mode NICs
2054 reg_val ^= (1 << pf | 1 << (pf + MAX_NUM_VFS));
2056 reg_val &= ~(E1000_DTXSWC_MAC_SPOOF_MASK |
2057 E1000_DTXSWC_VLAN_SPOOF_MASK);
2059 wr32(reg_offset, reg_val);
2063 * igb_vmdq_set_loopback_pf - enable or disable vmdq loopback
2064 * @hw: pointer to the hardware struct
2065 * @enable: state to enter, either enabled or disabled
2067 * enables/disables L2 switch loopback functionality.
2069 void igb_vmdq_set_loopback_pf(struct e1000_hw *hw, bool enable)
2073 switch (hw->mac.type) {
2075 dtxswc = rd32(E1000_DTXSWC);
2077 dtxswc |= E1000_DTXSWC_VMDQ_LOOPBACK_EN;
2079 dtxswc &= ~E1000_DTXSWC_VMDQ_LOOPBACK_EN;
2080 wr32(E1000_DTXSWC, dtxswc);
2084 dtxswc = rd32(E1000_TXSWC);
2086 dtxswc |= E1000_DTXSWC_VMDQ_LOOPBACK_EN;
2088 dtxswc &= ~E1000_DTXSWC_VMDQ_LOOPBACK_EN;
2089 wr32(E1000_TXSWC, dtxswc);
2092 /* Currently no other hardware supports loopback */
2099 * igb_vmdq_set_replication_pf - enable or disable vmdq replication
2100 * @hw: pointer to the hardware struct
2101 * @enable: state to enter, either enabled or disabled
2103 * enables/disables replication of packets across multiple pools.
2105 void igb_vmdq_set_replication_pf(struct e1000_hw *hw, bool enable)
2107 u32 vt_ctl = rd32(E1000_VT_CTL);
2110 vt_ctl |= E1000_VT_CTL_VM_REPL_EN;
2112 vt_ctl &= ~E1000_VT_CTL_VM_REPL_EN;
2114 wr32(E1000_VT_CTL, vt_ctl);
2118 * igb_read_phy_reg_82580 - Read 82580 MDI control register
2119 * @hw: pointer to the HW structure
2120 * @offset: register offset to be read
2121 * @data: pointer to the read data
2123 * Reads the MDI control register in the PHY at offset and stores the
2124 * information read to data.
2126 static s32 igb_read_phy_reg_82580(struct e1000_hw *hw, u32 offset, u16 *data)
2130 ret_val = hw->phy.ops.acquire(hw);
2134 ret_val = igb_read_phy_reg_mdic(hw, offset, data);
2136 hw->phy.ops.release(hw);
2143 * igb_write_phy_reg_82580 - Write 82580 MDI control register
2144 * @hw: pointer to the HW structure
2145 * @offset: register offset to write to
2146 * @data: data to write to register at offset
2148 * Writes data to MDI control register in the PHY at offset.
2150 static s32 igb_write_phy_reg_82580(struct e1000_hw *hw, u32 offset, u16 data)
2155 ret_val = hw->phy.ops.acquire(hw);
2159 ret_val = igb_write_phy_reg_mdic(hw, offset, data);
2161 hw->phy.ops.release(hw);
2168 * igb_reset_mdicnfg_82580 - Reset MDICNFG destination and com_mdio bits
2169 * @hw: pointer to the HW structure
2171 * This resets the the MDICNFG.Destination and MDICNFG.Com_MDIO bits based on
2172 * the values found in the EEPROM. This addresses an issue in which these
2173 * bits are not restored from EEPROM after reset.
2175 static s32 igb_reset_mdicnfg_82580(struct e1000_hw *hw)
2181 if (hw->mac.type != e1000_82580)
2183 if (!igb_sgmii_active_82575(hw))
2186 ret_val = hw->nvm.ops.read(hw, NVM_INIT_CONTROL3_PORT_A +
2187 NVM_82580_LAN_FUNC_OFFSET(hw->bus.func), 1,
2190 hw_dbg("NVM Read Error\n");
2194 mdicnfg = rd32(E1000_MDICNFG);
2195 if (nvm_data & NVM_WORD24_EXT_MDIO)
2196 mdicnfg |= E1000_MDICNFG_EXT_MDIO;
2197 if (nvm_data & NVM_WORD24_COM_MDIO)
2198 mdicnfg |= E1000_MDICNFG_COM_MDIO;
2199 wr32(E1000_MDICNFG, mdicnfg);
2205 * igb_reset_hw_82580 - Reset hardware
2206 * @hw: pointer to the HW structure
2208 * This resets function or entire device (all ports, etc.)
2211 static s32 igb_reset_hw_82580(struct e1000_hw *hw)
2214 /* BH SW mailbox bit in SW_FW_SYNC */
2215 u16 swmbsw_mask = E1000_SW_SYNCH_MB;
2217 bool global_device_reset = hw->dev_spec._82575.global_device_reset;
2219 hw->dev_spec._82575.global_device_reset = false;
2221 /* due to hw errata, global device reset doesn't always
2224 if (hw->mac.type == e1000_82580)
2225 global_device_reset = false;
2227 /* Get current control state. */
2228 ctrl = rd32(E1000_CTRL);
2230 /* Prevent the PCI-E bus from sticking if there is no TLP connection
2231 * on the last TLP read/write transaction when MAC is reset.
2233 ret_val = igb_disable_pcie_master(hw);
2235 hw_dbg("PCI-E Master disable polling has failed.\n");
2237 hw_dbg("Masking off all interrupts\n");
2238 wr32(E1000_IMC, 0xffffffff);
2239 wr32(E1000_RCTL, 0);
2240 wr32(E1000_TCTL, E1000_TCTL_PSP);
2243 usleep_range(10000, 11000);
2245 /* Determine whether or not a global dev reset is requested */
2246 if (global_device_reset &&
2247 hw->mac.ops.acquire_swfw_sync(hw, swmbsw_mask))
2248 global_device_reset = false;
2250 if (global_device_reset &&
2251 !(rd32(E1000_STATUS) & E1000_STAT_DEV_RST_SET))
2252 ctrl |= E1000_CTRL_DEV_RST;
2254 ctrl |= E1000_CTRL_RST;
2256 wr32(E1000_CTRL, ctrl);
2259 /* Add delay to insure DEV_RST has time to complete */
2260 if (global_device_reset)
2261 usleep_range(5000, 6000);
2263 ret_val = igb_get_auto_rd_done(hw);
2265 /* When auto config read does not complete, do not
2266 * return with an error. This can happen in situations
2267 * where there is no eeprom and prevents getting link.
2269 hw_dbg("Auto Read Done did not complete\n");
2272 /* clear global device reset status bit */
2273 wr32(E1000_STATUS, E1000_STAT_DEV_RST_SET);
2275 /* Clear any pending interrupt events. */
2276 wr32(E1000_IMC, 0xffffffff);
2279 ret_val = igb_reset_mdicnfg_82580(hw);
2281 hw_dbg("Could not reset MDICNFG based on EEPROM\n");
2283 /* Install any alternate MAC address into RAR0 */
2284 ret_val = igb_check_alt_mac_addr(hw);
2286 /* Release semaphore */
2287 if (global_device_reset)
2288 hw->mac.ops.release_swfw_sync(hw, swmbsw_mask);
2294 * igb_rxpbs_adjust_82580 - adjust RXPBS value to reflect actual RX PBA size
2295 * @data: data received by reading RXPBS register
2297 * The 82580 uses a table based approach for packet buffer allocation sizes.
2298 * This function converts the retrieved value into the correct table value
2299 * 0x0 0x1 0x2 0x3 0x4 0x5 0x6 0x7
2300 * 0x0 36 72 144 1 2 4 8 16
2301 * 0x8 35 70 140 rsv rsv rsv rsv rsv
2303 u16 igb_rxpbs_adjust_82580(u32 data)
2307 if (data < ARRAY_SIZE(e1000_82580_rxpbs_table))
2308 ret_val = e1000_82580_rxpbs_table[data];
2314 * igb_validate_nvm_checksum_with_offset - Validate EEPROM
2316 * @hw: pointer to the HW structure
2317 * @offset: offset in words of the checksum protected region
2319 * Calculates the EEPROM checksum by reading/adding each word of the EEPROM
2320 * and then verifies that the sum of the EEPROM is equal to 0xBABA.
2322 static s32 igb_validate_nvm_checksum_with_offset(struct e1000_hw *hw,
2329 for (i = offset; i < ((NVM_CHECKSUM_REG + offset) + 1); i++) {
2330 ret_val = hw->nvm.ops.read(hw, i, 1, &nvm_data);
2332 hw_dbg("NVM Read Error\n");
2335 checksum += nvm_data;
2338 if (checksum != (u16) NVM_SUM) {
2339 hw_dbg("NVM Checksum Invalid\n");
2340 ret_val = -E1000_ERR_NVM;
2349 * igb_update_nvm_checksum_with_offset - Update EEPROM
2351 * @hw: pointer to the HW structure
2352 * @offset: offset in words of the checksum protected region
2354 * Updates the EEPROM checksum by reading/adding each word of the EEPROM
2355 * up to the checksum. Then calculates the EEPROM checksum and writes the
2356 * value to the EEPROM.
2358 static s32 igb_update_nvm_checksum_with_offset(struct e1000_hw *hw, u16 offset)
2364 for (i = offset; i < (NVM_CHECKSUM_REG + offset); i++) {
2365 ret_val = hw->nvm.ops.read(hw, i, 1, &nvm_data);
2367 hw_dbg("NVM Read Error while updating checksum.\n");
2370 checksum += nvm_data;
2372 checksum = (u16) NVM_SUM - checksum;
2373 ret_val = hw->nvm.ops.write(hw, (NVM_CHECKSUM_REG + offset), 1,
2376 hw_dbg("NVM Write Error while updating checksum.\n");
2383 * igb_validate_nvm_checksum_82580 - Validate EEPROM checksum
2384 * @hw: pointer to the HW structure
2386 * Calculates the EEPROM section checksum by reading/adding each word of
2387 * the EEPROM and then verifies that the sum of the EEPROM is
2390 static s32 igb_validate_nvm_checksum_82580(struct e1000_hw *hw)
2393 u16 eeprom_regions_count = 1;
2397 ret_val = hw->nvm.ops.read(hw, NVM_COMPATIBILITY_REG_3, 1, &nvm_data);
2399 hw_dbg("NVM Read Error\n");
2403 if (nvm_data & NVM_COMPATIBILITY_BIT_MASK) {
2404 /* if checksums compatibility bit is set validate checksums
2407 eeprom_regions_count = 4;
2410 for (j = 0; j < eeprom_regions_count; j++) {
2411 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j);
2412 ret_val = igb_validate_nvm_checksum_with_offset(hw,
2423 * igb_update_nvm_checksum_82580 - Update EEPROM checksum
2424 * @hw: pointer to the HW structure
2426 * Updates the EEPROM section checksums for all 4 ports by reading/adding
2427 * each word of the EEPROM up to the checksum. Then calculates the EEPROM
2428 * checksum and writes the value to the EEPROM.
2430 static s32 igb_update_nvm_checksum_82580(struct e1000_hw *hw)
2436 ret_val = hw->nvm.ops.read(hw, NVM_COMPATIBILITY_REG_3, 1, &nvm_data);
2438 hw_dbg("NVM Read Error while updating checksum compatibility bit.\n");
2442 if ((nvm_data & NVM_COMPATIBILITY_BIT_MASK) == 0) {
2443 /* set compatibility bit to validate checksums appropriately */
2444 nvm_data = nvm_data | NVM_COMPATIBILITY_BIT_MASK;
2445 ret_val = hw->nvm.ops.write(hw, NVM_COMPATIBILITY_REG_3, 1,
2448 hw_dbg("NVM Write Error while updating checksum compatibility bit.\n");
2453 for (j = 0; j < 4; j++) {
2454 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j);
2455 ret_val = igb_update_nvm_checksum_with_offset(hw, nvm_offset);
2465 * igb_validate_nvm_checksum_i350 - Validate EEPROM checksum
2466 * @hw: pointer to the HW structure
2468 * Calculates the EEPROM section checksum by reading/adding each word of
2469 * the EEPROM and then verifies that the sum of the EEPROM is
2472 static s32 igb_validate_nvm_checksum_i350(struct e1000_hw *hw)
2478 for (j = 0; j < 4; j++) {
2479 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j);
2480 ret_val = igb_validate_nvm_checksum_with_offset(hw,
2491 * igb_update_nvm_checksum_i350 - Update EEPROM checksum
2492 * @hw: pointer to the HW structure
2494 * Updates the EEPROM section checksums for all 4 ports by reading/adding
2495 * each word of the EEPROM up to the checksum. Then calculates the EEPROM
2496 * checksum and writes the value to the EEPROM.
2498 static s32 igb_update_nvm_checksum_i350(struct e1000_hw *hw)
2504 for (j = 0; j < 4; j++) {
2505 nvm_offset = NVM_82580_LAN_FUNC_OFFSET(j);
2506 ret_val = igb_update_nvm_checksum_with_offset(hw, nvm_offset);
2516 * __igb_access_emi_reg - Read/write EMI register
2517 * @hw: pointer to the HW structure
2518 * @addr: EMI address to program
2519 * @data: pointer to value to read/write from/to the EMI address
2520 * @read: boolean flag to indicate read or write
2522 static s32 __igb_access_emi_reg(struct e1000_hw *hw, u16 address,
2523 u16 *data, bool read)
2527 ret_val = hw->phy.ops.write_reg(hw, E1000_EMIADD, address);
2532 ret_val = hw->phy.ops.read_reg(hw, E1000_EMIDATA, data);
2534 ret_val = hw->phy.ops.write_reg(hw, E1000_EMIDATA, *data);
2540 * igb_read_emi_reg - Read Extended Management Interface register
2541 * @hw: pointer to the HW structure
2542 * @addr: EMI address to program
2543 * @data: value to be read from the EMI address
2545 s32 igb_read_emi_reg(struct e1000_hw *hw, u16 addr, u16 *data)
2547 return __igb_access_emi_reg(hw, addr, data, true);
2551 * igb_set_eee_i350 - Enable/disable EEE support
2552 * @hw: pointer to the HW structure
2554 * Enable/disable EEE based on setting in dev_spec structure.
2557 s32 igb_set_eee_i350(struct e1000_hw *hw)
2561 if ((hw->mac.type < e1000_i350) ||
2562 (hw->phy.media_type != e1000_media_type_copper))
2564 ipcnfg = rd32(E1000_IPCNFG);
2565 eeer = rd32(E1000_EEER);
2567 /* enable or disable per user setting */
2568 if (!(hw->dev_spec._82575.eee_disable)) {
2569 u32 eee_su = rd32(E1000_EEE_SU);
2571 ipcnfg |= (E1000_IPCNFG_EEE_1G_AN | E1000_IPCNFG_EEE_100M_AN);
2572 eeer |= (E1000_EEER_TX_LPI_EN | E1000_EEER_RX_LPI_EN |
2575 /* This bit should not be set in normal operation. */
2576 if (eee_su & E1000_EEE_SU_LPI_CLK_STP)
2577 hw_dbg("LPI Clock Stop Bit should not be set!\n");
2580 ipcnfg &= ~(E1000_IPCNFG_EEE_1G_AN |
2581 E1000_IPCNFG_EEE_100M_AN);
2582 eeer &= ~(E1000_EEER_TX_LPI_EN |
2583 E1000_EEER_RX_LPI_EN |
2586 wr32(E1000_IPCNFG, ipcnfg);
2587 wr32(E1000_EEER, eeer);
2596 * igb_set_eee_i354 - Enable/disable EEE support
2597 * @hw: pointer to the HW structure
2599 * Enable/disable EEE legacy mode based on setting in dev_spec structure.
2602 s32 igb_set_eee_i354(struct e1000_hw *hw)
2604 struct e1000_phy_info *phy = &hw->phy;
2608 if ((hw->phy.media_type != e1000_media_type_copper) ||
2609 (phy->id != M88E1543_E_PHY_ID))
2612 if (!hw->dev_spec._82575.eee_disable) {
2613 /* Switch to PHY page 18. */
2614 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_PAGE_ADDR, 18);
2618 ret_val = phy->ops.read_reg(hw, E1000_M88E1543_EEE_CTRL_1,
2623 phy_data |= E1000_M88E1543_EEE_CTRL_1_MS;
2624 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_EEE_CTRL_1,
2629 /* Return the PHY to page 0. */
2630 ret_val = phy->ops.write_reg(hw, E1000_M88E1543_PAGE_ADDR, 0);
2634 /* Turn on EEE advertisement. */
2635 ret_val = igb_read_xmdio_reg(hw, E1000_EEE_ADV_ADDR_I354,
2636 E1000_EEE_ADV_DEV_I354,
2641 phy_data |= E1000_EEE_ADV_100_SUPPORTED |
2642 E1000_EEE_ADV_1000_SUPPORTED;
2643 ret_val = igb_write_xmdio_reg(hw, E1000_EEE_ADV_ADDR_I354,
2644 E1000_EEE_ADV_DEV_I354,
2647 /* Turn off EEE advertisement. */
2648 ret_val = igb_read_xmdio_reg(hw, E1000_EEE_ADV_ADDR_I354,
2649 E1000_EEE_ADV_DEV_I354,
2654 phy_data &= ~(E1000_EEE_ADV_100_SUPPORTED |
2655 E1000_EEE_ADV_1000_SUPPORTED);
2656 ret_val = igb_write_xmdio_reg(hw, E1000_EEE_ADV_ADDR_I354,
2657 E1000_EEE_ADV_DEV_I354,
2666 * igb_get_eee_status_i354 - Get EEE status
2667 * @hw: pointer to the HW structure
2668 * @status: EEE status
2670 * Get EEE status by guessing based on whether Tx or Rx LPI indications have
2673 s32 igb_get_eee_status_i354(struct e1000_hw *hw, bool *status)
2675 struct e1000_phy_info *phy = &hw->phy;
2679 /* Check if EEE is supported on this device. */
2680 if ((hw->phy.media_type != e1000_media_type_copper) ||
2681 (phy->id != M88E1543_E_PHY_ID))
2684 ret_val = igb_read_xmdio_reg(hw, E1000_PCS_STATUS_ADDR_I354,
2685 E1000_PCS_STATUS_DEV_I354,
2690 *status = phy_data & (E1000_PCS_STATUS_TX_LPI_RCVD |
2691 E1000_PCS_STATUS_RX_LPI_RCVD) ? true : false;
2697 static const u8 e1000_emc_temp_data[4] = {
2698 E1000_EMC_INTERNAL_DATA,
2699 E1000_EMC_DIODE1_DATA,
2700 E1000_EMC_DIODE2_DATA,
2701 E1000_EMC_DIODE3_DATA
2703 static const u8 e1000_emc_therm_limit[4] = {
2704 E1000_EMC_INTERNAL_THERM_LIMIT,
2705 E1000_EMC_DIODE1_THERM_LIMIT,
2706 E1000_EMC_DIODE2_THERM_LIMIT,
2707 E1000_EMC_DIODE3_THERM_LIMIT
2710 #ifdef CONFIG_IGB_HWMON
2712 * igb_get_thermal_sensor_data_generic - Gathers thermal sensor data
2713 * @hw: pointer to hardware structure
2715 * Updates the temperatures in mac.thermal_sensor_data
2717 static s32 igb_get_thermal_sensor_data_generic(struct e1000_hw *hw)
2726 struct e1000_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
2728 if ((hw->mac.type != e1000_i350) || (hw->bus.func != 0))
2729 return E1000_NOT_IMPLEMENTED;
2731 data->sensor[0].temp = (rd32(E1000_THMJT) & 0xFF);
2733 /* Return the internal sensor only if ETS is unsupported */
2734 hw->nvm.ops.read(hw, NVM_ETS_CFG, 1, &ets_offset);
2735 if ((ets_offset == 0x0000) || (ets_offset == 0xFFFF))
2738 hw->nvm.ops.read(hw, ets_offset, 1, &ets_cfg);
2739 if (((ets_cfg & NVM_ETS_TYPE_MASK) >> NVM_ETS_TYPE_SHIFT)
2740 != NVM_ETS_TYPE_EMC)
2741 return E1000_NOT_IMPLEMENTED;
2743 num_sensors = (ets_cfg & NVM_ETS_NUM_SENSORS_MASK);
2744 if (num_sensors > E1000_MAX_SENSORS)
2745 num_sensors = E1000_MAX_SENSORS;
2747 for (i = 1; i < num_sensors; i++) {
2748 hw->nvm.ops.read(hw, (ets_offset + i), 1, &ets_sensor);
2749 sensor_index = ((ets_sensor & NVM_ETS_DATA_INDEX_MASK) >>
2750 NVM_ETS_DATA_INDEX_SHIFT);
2751 sensor_location = ((ets_sensor & NVM_ETS_DATA_LOC_MASK) >>
2752 NVM_ETS_DATA_LOC_SHIFT);
2754 if (sensor_location != 0)
2755 hw->phy.ops.read_i2c_byte(hw,
2756 e1000_emc_temp_data[sensor_index],
2757 E1000_I2C_THERMAL_SENSOR_ADDR,
2758 &data->sensor[i].temp);
2764 * igb_init_thermal_sensor_thresh_generic - Sets thermal sensor thresholds
2765 * @hw: pointer to hardware structure
2767 * Sets the thermal sensor thresholds according to the NVM map
2768 * and save off the threshold and location values into mac.thermal_sensor_data
2770 static s32 igb_init_thermal_sensor_thresh_generic(struct e1000_hw *hw)
2775 u8 low_thresh_delta;
2781 struct e1000_thermal_sensor_data *data = &hw->mac.thermal_sensor_data;
2783 if ((hw->mac.type != e1000_i350) || (hw->bus.func != 0))
2784 return E1000_NOT_IMPLEMENTED;
2786 memset(data, 0, sizeof(struct e1000_thermal_sensor_data));
2788 data->sensor[0].location = 0x1;
2789 data->sensor[0].caution_thresh =
2790 (rd32(E1000_THHIGHTC) & 0xFF);
2791 data->sensor[0].max_op_thresh =
2792 (rd32(E1000_THLOWTC) & 0xFF);
2794 /* Return the internal sensor only if ETS is unsupported */
2795 hw->nvm.ops.read(hw, NVM_ETS_CFG, 1, &ets_offset);
2796 if ((ets_offset == 0x0000) || (ets_offset == 0xFFFF))
2799 hw->nvm.ops.read(hw, ets_offset, 1, &ets_cfg);
2800 if (((ets_cfg & NVM_ETS_TYPE_MASK) >> NVM_ETS_TYPE_SHIFT)
2801 != NVM_ETS_TYPE_EMC)
2802 return E1000_NOT_IMPLEMENTED;
2804 low_thresh_delta = ((ets_cfg & NVM_ETS_LTHRES_DELTA_MASK) >>
2805 NVM_ETS_LTHRES_DELTA_SHIFT);
2806 num_sensors = (ets_cfg & NVM_ETS_NUM_SENSORS_MASK);
2808 for (i = 1; i <= num_sensors; i++) {
2809 hw->nvm.ops.read(hw, (ets_offset + i), 1, &ets_sensor);
2810 sensor_index = ((ets_sensor & NVM_ETS_DATA_INDEX_MASK) >>
2811 NVM_ETS_DATA_INDEX_SHIFT);
2812 sensor_location = ((ets_sensor & NVM_ETS_DATA_LOC_MASK) >>
2813 NVM_ETS_DATA_LOC_SHIFT);
2814 therm_limit = ets_sensor & NVM_ETS_DATA_HTHRESH_MASK;
2816 hw->phy.ops.write_i2c_byte(hw,
2817 e1000_emc_therm_limit[sensor_index],
2818 E1000_I2C_THERMAL_SENSOR_ADDR,
2821 if ((i < E1000_MAX_SENSORS) && (sensor_location != 0)) {
2822 data->sensor[i].location = sensor_location;
2823 data->sensor[i].caution_thresh = therm_limit;
2824 data->sensor[i].max_op_thresh = therm_limit -
2832 static struct e1000_mac_operations e1000_mac_ops_82575 = {
2833 .init_hw = igb_init_hw_82575,
2834 .check_for_link = igb_check_for_link_82575,
2835 .rar_set = igb_rar_set,
2836 .read_mac_addr = igb_read_mac_addr_82575,
2837 .get_speed_and_duplex = igb_get_link_up_info_82575,
2838 #ifdef CONFIG_IGB_HWMON
2839 .get_thermal_sensor_data = igb_get_thermal_sensor_data_generic,
2840 .init_thermal_sensor_thresh = igb_init_thermal_sensor_thresh_generic,
2844 static struct e1000_phy_operations e1000_phy_ops_82575 = {
2845 .acquire = igb_acquire_phy_82575,
2846 .get_cfg_done = igb_get_cfg_done_82575,
2847 .release = igb_release_phy_82575,
2848 .write_i2c_byte = igb_write_i2c_byte,
2849 .read_i2c_byte = igb_read_i2c_byte,
2852 static struct e1000_nvm_operations e1000_nvm_ops_82575 = {
2853 .acquire = igb_acquire_nvm_82575,
2854 .read = igb_read_nvm_eerd,
2855 .release = igb_release_nvm_82575,
2856 .write = igb_write_nvm_spi,
2859 const struct e1000_info e1000_82575_info = {
2860 .get_invariants = igb_get_invariants_82575,
2861 .mac_ops = &e1000_mac_ops_82575,
2862 .phy_ops = &e1000_phy_ops_82575,
2863 .nvm_ops = &e1000_nvm_ops_82575,